Edward cliff



(N6 Model.)

CLIFF.

GAB SPRING.

No. 283,078. PatentedAug.14,-1883.

' hereto annexed, in which.

PATENT OFFICE.

EDWVARD CLIFF,

OF'OSWEGO, NEl/V YORK, ASSIGNOR TO CLIFF 8t menrnn COMPANY, (LIMITED,) OF SAME PLACE.

CAR-SPRING.

SPECIFICATION forming part of Letters Patent No. 283,078, dated August 14, 1883.

Application filed March 24,1ss3. (No model.)

York, have invented an improvement in caps for the ends of spiral springs for use on railway cars, 850., of which the following is a specification, reference being bad to the drawings Figure l is a sectional view of 7 my cap and a spiral spring Fig. 2, a top view of the bottom part of my cap, the inner part or bottom removed. Fig. 3 is a top view of said cap, the inner part or bottom being removed. Fig. 4 is a top view of the inner part or bottom. 1

My invention relates to an improvement in caps for spiral springs used. in railway and street cars, 850., and is made so that by its use two spiral springs-one inside of the other-+ may be used, and although both springs are of the same length and resting in the same cap,yet one allowed more longitudinal motion than the other, thus affording a graduated spring, also by. the use of which both spirals are held from any contact and all rocking or rattling prevented... To do this, in

the place of the usually-constructed cap or end.

covering found now in use, I construct a cap composed of two pieces, the outer and larger piece, A, and inner piece B. The outer and larger piece is constructed with the recess h between the outer rim, 1), andthe inner rim, 0. At certain distances apart, and running from rim 1) to rim 0 in the said recess h, are

placed the ridges-or ribs a a, all resting 011 the same plane,and all of equal width. In the face of the rim 0, on the inside, is the rib .or projecting circular lip, d, located a little more than halfway down from the top of and on said rim 0. On this rib or projecting lip is placed the inner part, B. (Shown in Figs. 1 and 4.) The middlepart of this inner piece, B, is countersunk, as shown in Fig. 1 at 7c. In the center of said piece B is a hole, Z, Fig. 4, through which the, bolt m is passed, the head of said bolt resting down out of contact in said hole Z.

It will be seen that the end of inner spiral D rests in recess formed between kand rim 0, and rests against the bottom of piece B. The

outer coil, E, rest-s between the rims c and 6 same plane as found in the recesses.

on the lower sides of ridges or lugs a a. The

cap and springs are likewise placed at the other end. Then the bolt is passed up through the hole Z and inner spiral and out of the hole Zin the upper circle or piece, B, and the Now, when the screw-head formed therein. bolt is securely fastened therein, the top and bottom of spiral springs D and E rest in the Now weightis placed on the top of the cap, and the same presses downthe'spirals; but as theweightis increased and the inner spring is forced against the piece B it forces the said piece up until it may, if weight suffiicient be applied, be inthe same plane as the top of piece A. The two spirals now act as auxil" iaries one to the other, for as soon as the outer spiral is well reduced the same weight causes the inner spiral to push up. the piece B, and thus the spiral D is relieved and given a longer motion. Thus a graduated spring in motion is obtainedwith springs of same length. by means of thecap.

If desired,.the cap may have another rim added exterior to all, and a third spring can be used.

It will be readily seen, also, that the rim 0 prevents any rattling of the spring, or' any contact between the two spirals, as the bolt m keeps the parts A and. B at alltimes in contact withthe spirals D and E. V A Any other mode of producing the same plane on which to rest the ends of the spirals may be obtained by having the recess be tween the rims c and b filled with metal between the ribs a a; but this only increasesthe weight of the cap and gives no additional benefit; or the face of partA may be countersunk, so that the same plane is obtained. I prefer the way I- here show.

1 am well aware that caps or followers for spiral springs have'been so constructed that the load or car-body containing the load,when placed upon the cap or the follower/ presses the cap or follower down onto. the center spiral or spirals, or rather on the spiral under the cap or follower, until the load rests on the main cap and on the main spiral underneath said main cap.

What I claim, and desire to secure by Let ters Patent, is-

52 scams 1. An adjustable cap or covering for spiral springs, consisting of the rim A, having ribs springs, consisting of the main cap A, the a a, the movable disk B, and the same plane movable disk B, which disk, in its motion up surfaces, in combination with spirals E and and down, does not extend above the upper D, held together by bolt m, so as to prevent I 5 5 surface of cap A or below the rib d, or below any rattling or displacement of said spirals, the plane in which the end of the main spiral substantially as described, and for the purrests, both inner and outer coils being of the pose specified. same length, and when at rest-in the same EDWARD CLIFF. plane, substantially as described, and for the Witnesses:

10 purpose specified. D. M. IRWIN,

2. A graduated cap or covering for spiral F. E. MOREY. 

